n
Example :
Read the status of a projector with address \x01.
Suppose the status is projector on, text on, video mute off,
picture frozen and no 800-peripheral connected.
Transmit
Start
Projector address
Command[0]
Checksum
Stop
Receive (acknowledge)
Start
Projector address
Command[0]
Command[1]
Checksum
Stop
Receive (answer)
Start
Projector address
Command[0]
Data[0]
Checksum
Stop
\xfe
\x01
\x67
\x68
\xff
\xfe
\x01
\x00
\x06
\x07
\xff
\xfe
\x01
\x67
\x0b
\x73
\xff
54